Wrench



PATENTED SEPT. 20, 1904.

J. LILL.

WRENCH.

APPLICATION FILED 001'. 24, 1903.

2 SHEETS-SHEET 1.

vNO MODEL.

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iviluaaaco E? PATENTED SEPT. 20, 1904 J. LILL.

WRENCH.

APPLICATION FILED 0GT.24, 190s.

2 SHEETS-SHEET 2.

N0 MODEL.

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JL/VZ UNTTED STATES Patented September 20, 1904.

PATENT Crricn.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 770,687, dated. September 20, 1904.

Application filed October 24, 1903. Serial No. 178,350; (No model.)

1'0 ML w/wm it may concern:

Be it known that I, J ACOB LILL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in renches, of which the following is a specification.

My invention relates to new and useful improvements in wrenches; and its object is to provide a simple and inexpensive device of this character which can be readily stamped from sheet metal and is formed of few parts.

A further object is to provide a wrench which can be readily taken to pieces and the jaws of which will automatically bear upon a pipe or other similar article when placed in position therebetween.

WVith the above and other objects in View the invention consists in the novel construction and combination of parts hereinafter more fully described and claimed, and illustrated in.

the accompanying drawings, showing the preferred form of my invention, in which Figure 1 is a side elevation of the wrench. Fig. 2 is a bottom plan view thereof. Fig. 3 is a section on line 3 3, Fig. 1. Fig. 4 is a longitudinal section through the wrench, and Fig. 5 is a plan view of the blank from which the spring is shaped.

Referring to the figures by numerals of reference, 1 1 are parallel arms, having jaws 2 formed at their outer ends, and said jaws are provided along their inner edges with teeth 3, adapted to engage a pipe or other object. A bolt 4 connects the opposite ends of the arms 1, and said arms are spaced apart a sufficient distance to permit the insertion therebetween of a shank 5, having recesses 6 in its lower edge, any one of which is adapted to receive the bolt 4. A handle 7 is formed at one end of the shank, while a jaw 8 is formed at the other end, and this jaw has teeth 9 upon its working face. A spring of novel construction is mounted upon the arms and shank and serves to hold the parts in proper relation to each other and to continually exert a downward pressure upon the outer end of the shank, so as to cause the jaw 8 to swing automatically toward the jaws 3. This spring is formed of a longitudinally-extending strip 10, having laterally-extending arms 11 at its ends, and two of these arms overlap the arms 1, while the other arms overlap and clamp upon the shank 5. Ears 12 are formed at the sides of the spring at points between the ends thereof, and these ears extend to opposite sides of arms 1 and are engaged by the bolt 4. It will be understood that arms 11 not only clamp upon the shank 5, but also upon the arms 1.

By constructing a wrench in the manner above described it will be seen that the parts can be struck from sheet metal and can be readily assembled. The bolt employed for securing the arms 1 together is also used as a fulcrum for the shank, and the spring can be readily placed in position and then serves not only to support the jawed ends of the arms, but also exerts a continual pressure upon the shank, so as to cause the jaws 3 and 8 to automatically clamp upon any article placed therebetween. v

In the foregoing description I have shown the preferred form of my invention; but I do not limit myself thereto, as I am aware that modifications may be made therein without departing from the spirit or sacrificing any of the advantages thereof, and I therefore reserve the right to make such changes as fairly fall within the scope of my invention.

Having thus described the invention, what is claimed as new is 1. In a wrench, the combination with similar parallel arms having integral toothed jaws, and means for connecting the arms; of a shank fulcrumed upon the connecting means and interposed between the arms, a jaw and a handle at opposite ends of the shank, and a springstrip secured to the connecting means and bearing at its ends upon the arms and shank, respectively.

2. In a wrench, the combination with similar parallel arms having integral toothed jaws, and a bolt connecting the arms; of a recessed shank fulcrumed upon the bolt and interposed between the arms, said shank having a toothed jaw and a handle at opposite ends,and a springstrip connected to the bolt and bearing at its ends upon the arms and shank, respectively.

3. In a wrench, the combination with similar parallel arms havingintegral toothed jaws, clamping upon the arms and shank, respeo- T0 and a bolt connecting the arms; of a shank tively. arranged between the arms and havinga series In testimony whereof I affix my signature in of recesses in one edge, any one of which is presence of two witnesses. 5 adapted to receive the bolt, a toothed jaw integral with the shank, a handle at the other JACOB LILL' end of the shank, a spring-strip mounted upon Witnesses: the bolt and extending over the arms and DAVID A. MONEILL,

shank, and arms integral with said strip and GEO. M. HEFLEBOWER. 

